Please help me I need the work

Answers

Answer 1

Let's solve your system by substitution.
2
x
−
3
y
=
1
;
3
x
+
2
y
=
6

Step: Solve
2
x
−
3
y
=
1
for x:
2
x
−
3
y
=
1
2
x
−
3
y
+
3
y
=
1
+
3
y
(Add 3y to both sides)
2
x
=
3
y
+
1
2
x
2
=
3
y
+
1
2
(Divide both sides by 2)
x
=
3
2
y
+
1
2

Step: Substitute
3
2
y
+
1
2
for
x
in
3
x
+
2
y
=
6
:
3
x
+
2
y
=
6
3
(
3
2
y
+
1
2
)
+
2
y
=
6
13
2
y
+
3
2
=
6
(Simplify both sides of the equation)
13
2
y
+
3
2
+
−
3
2
=
6
+
−
3
2
(Add (-3)/2 to both sides)
13
2
y
=
9
2
13
2
y
13
2
=
9
2
13
2
(Divide both sides by 13/2)
y
=
9
13

Step: Substitute
9
13
for
y
in
x
=
3
2
y
+
1
2
:
x
=
3
2
y
+
1
2
x
=
3
2
(
9
13
)
+
1
2
x
=
20
13
(Simplify both sides of the equation)

Answer:
x
=
20
13
and
y
=
9
13

Related Questions

A.104
B.95
C.85
D.114

Answers

D 114 is the answer

Answer:

i got 85 but if not keep studying and i will solve if help k

Step-by-step explanation:

State which ordered pair could be added to the table of values to keep it a function.-

PLS HELP, I'LL MARK BRAINLEST AND GIVE 90 POINTS D:

Answers

Answer:

Step-by-step explanation:

+10

Simplify the following expression.

322.5 × 0.23
A.
7.4175
B.
7.4405
C.
106.425
D.
74.175 what is the answer I'm very slow at math 6 grade

Answers

Answer:

74.175

Step-by-step explanation:

Given:

322.5 × 0.23

Simplify;

322.5 × 0.23

3,225/10 × 23/100

74,175/1,000

74.175

Option "D" is the correct answer.

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. Mary measures a box and finds the length is 7 1/2 inches, the width is 14 inches, and the height is 15 inches. What is the volume of the box? [Type your answer as a number.]

Answers

Answer:

7.5 X 14 X 15

l X w X h

answer 1575 cubed inches

a student cost for last semester at her community college was $2200. she spent $308 of that on books. what % of last semesters college costs was spent on books

Answers

Answer:

We conclude that 14% of last semester's college cost was spent on books.

Step-by-step explanation:

The cost spent at community college = $2200

The amount spent on books = $308

The % of last semesters college costs was spent on books can be determined using the formula

% spent books on = [308 / 2200] × 100

= 0.14 × 100

= 14%

Therefore, we conclude that 14% of last semester's college cost was spent on books.

10.2 cm
8 cm
126 cm
6.3 cm
To the nearest tenth, what is the volume of this right triangular prism?
A
3175 cm
B)
404 8 cm
514.1 cm
509,7 cm

Answers

It's volume is 3175 cm.

Plz help I am desperate lol

Answers

Question # 7

Given two points

(0, 0)(3, 3)

Determining the slope of the line passing through the points (0, 0) and (3, 3)

(x₁, y₁) = (0, 0)

(x₂, y₂) = (3, 3)

Using the formula

Slope = m = [y₂ - y₁] / [x₂ - x₁]

= [3 - 0] / [3 - 0]

= 3 / 3

= 1

Thus, the slope of the line = m = 1

Question # 8

Given two points

(1, 3)(5, 5)

Determining the slope of the line passing through the points (1, 3) and (5, 5)

(x₁, y₁) = (1, 3)

(x₂, y₂) = (5, 5)

Using the formula

Slope = m = [y₂ - y₁] / [x₂ - x₁]

= [5 - 3] / [5 - 1]

= 2/4

= 1/2

Thus, the slope of the line = m = 1/2

Question # 9

Given two points

(4, 4)(5, 3)

Determining the slope of the line passing through the points (4, 4) and (5, 3)

(x₁, y₁) = (4, 4)

(x₂, y₂) = (5, 3)

Using the formula

Slope = m = [y₂ - y₁] / [x₂ - x₁]

= [3 - 4] / [5 - 4]

= -1 / 1

= -1

Thus, the slope of the line = m = -1

I need help with geometry

Answers

Answer:

segment EF

Step-by-step explanation:

the longest side in a triangle is opposite the largest angle

EF is opposite the angle measuring 85°, which is the largest angle measure in this diagram

25 POINTS PLEASE HELP!Which point represents the ordered pair (-2 1/4, 2/3)

Answers

Step-by-step explanation:

For the ordered pair (-2.25, 2/3),

the x value -2.25 should lie between -2 and -3.

Similarly,

The y-value 2/3 should lie between 0 and 1.

The best answer here is point S.

The answer would be point S
(If you want me to explain I can)

Hope this helps

Have a great day/night

Simplify the following expressions (pleas help I know it’s a lot...)

Answers

Answer:

1. C

2. A

3. C

Hope this helps :)

Step-by-step explanation:

Help me please please please please

Answers

Answer:

-4r + 9

Step-by-step explanation:

Join the r terms, you get -4r, join the numbers, you get 9.

Hope it helps!

A quantity with an initial value of 1700 grows exponentially at a rate such that the quantity doubles every 5 years. What is the value of the quantity after 81 months, to the nearest hundredth?

Answers

Answer: 4333.51

Step-by-step explanation:

The value after 81 months is 4333.51.

Given initial value=P=1700

Time=t=81 months= [tex]\frac{81}{12} =6.75[/tex] years.

Doubling time = d = 5 years.

So, the value after 6.75 years is:

[tex]A=P(2)^{\frac{t}{d} } \\A=1700(2)^{\frac{6.75}{5}}\\ A=4333.50613289\\A=4333.51[/tex]

Learn more: https://brainly.com/question/13893164

The half-life of the element radon (Rn86) is 3.8 days. In a sample originally containing 1 gram of radon, the amount of left over days is given by the model () = (0.5)t/3.8 a) How much radon will be present after 7.6 days? b) How much radon will be present after 10 days?

Answers

Answer:

a.0.25 g

b.0.16 g

Step-by-step explanation:

We are given that

Half-life of the element radon=3.8 days

Mass of sample of radon=1 g

The amount of radon left after t days is given by

[tex]A(t)=(0.5)^{\frac{t}{3.8}}[/tex]

We have to find the amount of radon left after 7.6 days.

Substitute t=7.6 in the equation

Then, we get

[tex]A(7.6)=(0.5)^{\frac{7.6}{3.8}}[/tex]

[tex]A(7.6)=0.25 g[/tex]

Hence, the amount of radon will be present after 7.6 days=0.25 g

b. We have to find the amount of radon left after 10 days.

Substitute t=10 in the equation

Then, we get

[tex]A(10)=(0.5)^{\frac{10}{3.8}}[/tex]

[tex]A(10)=0.16g[/tex]

Hence, the amount of radon will be present after 10 days=0.16 g

To find the quotient 5/7 divided by 1/3 multiply..
Answers:
Multiply 7/5 by 1/3
Multiply 7/5 by 3
Multiply 5/7 by 3
Multiply 5/7 by 1/3

Answers

Answer:

Multiply 5/7 by 3

Step-by-step explanation:

To find the quotient (division) multiply by the reciprocal. The reciprocal of 1/3 is 3.

help me with my math please

Answers

Answer:

First, let's do a fast definition of a function.

A function is a relation that maps elements from a given set (the domain, is the set of the inputs, usually represented with the variable x) into elements of another set (the range, which is the set of the outputs, usually represented with the variable y)

The functions can map each element of the domain into only one output.

Now, let's solve the problem:

For the vertical table, we can see that the values of x are:

{1, 2, 3} This is the domain.

And the values of y are:

{4, 6, 8} This is the range.

This relation represents a function.

For the horizontal table, we can see that:

The inputs are:

{4, 5} (notice that the 4 is two times there) This is the domain.

And the outputs are:

{2, 3, 4} This is the range.

Here we can see that this relationship maps the input "4" into two different outputs, then this is not a function.

2) We want to know if the graph represents a function.

The first thing we can see is that if we draw a vertical line in some places, the line will touch the graph at two different points. This means that one single value of x can be mapped into two different values of y.

And as we already said, a function maps each input into only one output, then the graph does not represent a function.

Robert can do 52 jumping jacks in 10 minutes. at this rate, how many jumping jacks can Robert do in 35 minutes?

Answers

Answer:

182

Step-by-step explanation:

Answer:182

Step-by-step explanation:52+52+52+26

26 jumpingjacks in 5 minutes and 52 jumping jacks in 10 minutes

In each of the following, a variation relationship is given. Find the requested value of the function in each.

a. y = 3x when x = 2

b. y = –2⁄ x when x = 16

c. y = ––3⁄ x2 when x = –3

d. y = 14x2 when x = 100

e. y = –2x when x =.4

f. y = 6/7x2 when x= 3

Answers

Answer:

a.y=6

b.-1/8

c.1/2

d.2800

e.-8

f.7.71

Step-by-step explanation:

Which of the following results in the expression 0.43 x 52? (1 point)

52% of 0.42
43 of 52%
0.52 of 43%
43% of 52

Answers

Answer:

43% of 52

Step-by-step explanation:

Joanne has 96 beads to make necklaces. she uses an equal number of beads to make each of 8 necklaces. which multiplication sentence with Joanne used to find the number of beats in each necklace?

Answers

Answer: 96 divide by 8

Step-by-step explanation:

Find the 40th term in each arithmetic sequence.
1. 4, 8, 12, 16, ...
2. 13, 26, 39, 52, ...
3. 6, 12, 18, 24, ...

Answers

1. 160 2. 520 3.240 hopefully they are right

Solve
7x + 6 < -22 need help asap!

Answers

Answer:

x<−4

Step-by-step explanation:

7x+6<-22

7x+6-6<-22-6

7x<-28

7x/7<-28/7

x<-4

Hope it helped!

Answer:

x < - 4

Step-by-step explanation:

Steps: 1. Subtract 6 from both sides

2. Simplify

3. Divide both sides by 7

4. Simplify.

Answer: x < - 4

Hope this helps!

WILL GIVE BRAINLIEST PLZ HELP

Is the second picture right? (the new line is the blue one)

Answers

AnsweIt should be right

Step-by-step explanation:

find the value of the polynomial 2x^3y^3+3xy-3x^3y^3+x^2y-xy+2x^2y for x=-1 and y=2

Answers

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

2x³y³ + 3xy - 3x³y³ + x²y - xy + 2x²y

x = -1

y = 2

Step 2: Evaluate

Substitute: 2(-1)³(2)³ + 3(-1)(2) - 3(-1)³(2)³ + (-1)²(2) - (-1)(2) + 2(-1)²(2)Exponents: 2(-1)(8) + 3(-1)(2) - 3(-1)(8) + 1(2) - (-1)(2) + 2(1)(2)Multiply: -16 - 6 + 24 + 2 - (-2) + 4Simplify: -16 - 6 + 24 + 2 + 2 + 4Subtract: -22 + 24 + 2 + 2 + 4Add: 2 + 2 + 2 + 4Add: 4 + 2 + 4Add: 6 + 4Add: 10

hii I really need help!!

question:

A woodworker wants to cut a board that is 8.225 feet long into 5 equal-length pieces how long will each of the cut boards be?

Answers

Answer:

1.645 ft

Step-by-step explanation:

Divide the length of the board by the number of pieces it will be cut into

8.225/5=1.645 ft

What is it???????? Nada

Answers

Answer:

g(3)= -1

Step-by-step explanation:

from the graph f(3)= -1

so, g(3) = -4 * (-1) + 7 = 12

HELP PLEASE
Carolina completed the right column of the table to help her translate the number 5.073 to word form.
Step 1: State the number before the decimal point. "Five"
Step 2: Write the word "and."
Step 3: State the number after the decimal point.
Step 4: Write the place value of the last digit.
Step 5: Combine steps 1 to 4 to write the number.
"and"
"seventy-three"
"hundredths"
"Five and seventy-three
hundredths"
In which step was the first error made?
O Step 1
O Step 3
O Step 4
Step 5

Answers

Answer:

..mrnekrvgnw4,grmsfc

Step-by-step explanation:

What is the least common multiple (LCM) of 6 and 9?

Answers

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

I'm positive it's 18 :)

Simplify.
5 +8 X 2 – 10

Answers

Answer:

-104

Step-by-step explanation:

5+8=13

2-10=-8

13×-8=-104

Draw the image of △ABC, under a translation by 2 units down.

Answers

Answer:

Point C would now be (6,0)

Point B would now be (0,-7)

Point A would now be (2,-6)

After a tax of 7% is applied, the total cost of an item is $34.24. Which of the following
equations could you use to find the original price, p?
34.24 1.07=p
O 34.24*0.93-p
01.07p=34.24
O 0.93p-34.24

Please help fast!!!

Answers

Answer:

Step-by-step explanation:

do it your self

just know its not b.....

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